Rubber mop



FIG. 1 is a bottom view of a rubber mop in accordance with the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom perspective thereof; and,

FIG. 6 is a top perspective view thereof.

The broken lines illustrate portions of the rubber mop that form no part of the claimed design. 

CLAIM The ornamental design for rubber mop, as shown and described. 